title: Study of antibodies against viruses, chlamydiae, rickettsiae and Mycoplasma pneumoniae in children with respiratory diseases.
abstract: Seroconversion to different viral, chlamydial, rickettsial and mycoplasma antigens was followed up in 134 children aged 0-6 years, hospitalized with different respiratory diseases. Parainfluenza viruses type 1, 2 and 3 and adenoviruses appeared to be involved in the etiology of most of the cases; respiratory syncytial virus was often found to play a role in pneumonia/bronchopneumonia and in "influenza-like illness", while chlamydiae and M. pneumoniae could be incriminated in cases of "influenza-like illness", as well as in the other categories of respiratory disease. Mixed infections with the agents studied could be detected.
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis*; D000914:Antibodies, Viral / Q000032:analysis*; D000942:Antigens, Bacterial / Q000276:immunology; D000956:Antigens, Viral / Q000276:immunology; D001996:Bronchopneumonia / Q000382:microbiology; D002648:Child; D002675:Child, Preschool; D002689:Chlamydia / Q000276:immunology*; D006801:Humans; D007223:Infant; D007251:Influenza, Human / Q000382:microbiology; D009177:Mycoplasma pneumoniae / Q000276:immunology*; D011014:Pneumonia / Q000382:microbiology; D012140:Respiratory Tract Diseases / Q000276:immunology / Q000382:microbiology*; D012281:Rickettsia / Q000276:immunology*; D014780:Viruses / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000914:Antibodies, Viral; D000942:Antigens, Bacterial; D000956:Antigens, Viral